The lone review by KD8DVR on eHam.net gives the PX-888K a thumbs up. He seems happier with the transmit audio - just comments it is a little "bassy." He's also posted a more detailed review on epinions.com. He specifically mentions that he has no trouble with the muffled audio that is common to Puxing. He does wish the battery life was better.

As with most Chinese radios, everyone is unhappy with the scanning speed.

The PX-888K has Part 90 acceptance - FCC ID: AUJPXDZ888K001. If you go to the FCC site, and search for AUJ in the Grantee Code field, you can see the documents submitted for approval including pictures, manuals, etc.